Freezing-tank.



No. 754,522. PATBNTBD lvm/R.` 15, 1904. G.W. VoLLMAN-N. PREEZING' TANK.

APPLICATION FILED NOV. 3 1902. NO MODEL.

Mnz-.5650 l f No. 754,522. Y

UNITED STATES Patented March 15, 1904.

VPATENT OFFICE.-

cAELwILH'ELM voLLMANN, or MONTREAL, CANADA.

FREzlNG-TANK.

SPECIFICATION forming part of Letters Patent No. 754,522, dated March 15, 1904.

Application filed November 3, 1902. Serial No. 130,002. (No model.)

To a/ZZ whom tvv/tay concern:

Be it known that I, CARL WILHELM VOEL- MANN, of the city of Montreal, districtof Mon-- treal, and Province of Quebec, Canada, have invented certain new and useful Improvements in Freezing-Tanks; and I do hereby declare that the following is a full, clear, and y exact larged in thickness by a projection extending throughout the length of each of said side edges and having the portion thereof adjoining the edge of concave form and adapted to t tightly upon the perimeter of tubular freezing-sections, while these wall members are arranged with their side. edges adjoining, thus constituting a complete wall.

For full comprehension, however, of my invention reference must be had to the accompanying drawings,form ing apart of this specication, in which similar reference characters indicate the same parts, and'wherein- Figure l is a side elevation, partly in' section, of a freezing-tank provided with a wall constructed according to my invention. Fig. 2 is a plan view thereof.v Fig. 3 is a vertical sectional view of my improved freezing-wall, taken on line 2'2, Fig. 1; and Fig. 4 is a detail perspective view illustrating my improved wall members removed.

The tank I), tubular brine and ammonia conductingY sections c and d, respectively, are and may be of any preferred construction, and as they form no part of my present invention I will not describe them in detail. These tubular sections c and d are arranged horizontally and a distance lapart about equal to the diameter thereof. Each wall, one of which is shown in cross-section inFig. 3, comprises said tubular sections and a series of wall members jl'with plane outerA surfaces g and a pair of inwardly-projecting ribs L on the inside surface adjacent to the side edges and extending throughout their lengths, the portion of these ribs adjoining the edges being concaved, as at c', to ft upon the perimeter.

of the tubular sections, and each incloses the portion of the latter contiguous to a point in a plane extending horizontally through the center thereof. Portions of a pair of these wall members are shown removed in Fig. 4.

The -wall members of my improved wall are secured together by angle-irons lo, one near each end of each side thereof, and a series of bolts m, projecting'through said angle-irons and wall members and between the ammonia ,and brine sections. Apair of vertical strips n., oneat the middle of 'each side of the wall and secured in place by bolts o, serve as stiffness for the wall members. These angle-irons also serve as a means for securing the usual squaring-plates p in place.

The advantage attendant upon this construction is that the heat will be taken more readily from the concaveportions of the wall members by the tubular sections andthe complete wall thereby more quickly chilled on account ofthe concave portions partially surounding and fitting tightly the tubular surace.

What I claim is as follows:

In a freezing-tank, a freezing-wall comprising a series of tubular members lextending from end to end ofA the wall and arranged a short distance apart, and a series of wall members consisting of strips extending from end to end of said tubular members and arranged with their edges abutting, said strips presenting plane outer surfaces collectively forming a wall with a plane surface the inside surface of each of said wall members havingapair of ribs, one located adjacent to and extending from end to end of each side edge thereof, and the portion of said ribs contiguous to said edges being concaved toit upon said tubular members, substantially as described and. for the purpose set forth.

In testimony whereof I have aflixed my sig- .nature in presence of two witnesses. 

